The importance of accurately estimated filter stability of geotextiles for various applications is well known.

Filter stability and other material characteristics such as drainage, sealing and separating capability, are related to the characteristic opening size of a geotextile material.

• Amplitude range: 0 - 1.5 mm
• Base sieve: Wire: 1 mm ; Aperture size: 10 mm.
• Sample size: 130 - 200 mm diameter.
• Filter paper: Thickness: < 10 μm.
• Wetting device: Clamping plate with translucent cover, spray nozzle, watertight seals, stainless steel receiver with drainage spout.
• Data communication: RS 232 interface.
• Power supply: 230 - 50 Hz.
• Dimensions: 850 mm (H) x 400 mm (W) x 350 mm (D) ; Weight: approx. 35 kg.